气候变化领域集成服务门户(CCPortal): The global cropland-sparing potential of high-yield farming

CCPortal

DOI	10.1038/s41893-020-0505-x
	The global cropland-sparing potential of high-yield farming
	Folberth C.; Khabarov N.; Balkovič J.; Skalský R.; Visconti P.; Ciais P.; Janssens I.A.; Peñuelas J.; Obersteiner M.
发表日期	2020
ISSN	2398-9629
起始页码	281
结束页码	289
卷号	3 期号:4
英文摘要	The global expansion of cropland exerts substantial pressure on natural ecosystems and is expected to continue with population growth and affluent demand. Yet earlier studies indicated that crop production could be more than doubled if attainable crop yields were achieved on present cropland. Here we show on the basis of crop modelling that closing current yield gaps by spatially optimizing fertilizer inputs and allocating 16 major crops across global cropland would allow reduction of the cropland area required to maintain present production volumes by nearly 50% of its current extent. Enforcing a scenario abandoning cropland in biodiversity hotspots and uniformly releasing 20% of cropland area for other landscape elements would still enable reducing the cropland requirement by almost 40%. As a co-benefit, greenhouse gas emissions from fertilizer and paddy rice, as well as irrigation water requirements, are likely to decrease with a reduced area of cultivated land, while global fertilizer input requirements remain unchanged. Spared cropland would provide space for substantial carbon sequestration in restored natural vegetation. Only targeted sparing of biodiversity hotspots supports species with small-range habitats, while biodiversity would hardly profit from a maximum land-sparing approach. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Biodiversity; Cultivation; Fertilizers; Gas emissions; Greenhouse gases; Irrigation; Population statistics; Carbon sequestration; Global expansion; Irrigation water requirements; Landscape elements; Natural ecosystem; Natural vegetation; Population growth; Production volumes; Crops
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163177
作者单位	Ecosystem Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, Austria; Department of Soil Science, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia; Soil Science and Conservation Research Institute, National Agricultural and Food Centre, Bratislava, Slovakia; Laboratoire des Sciences du Climat et de l’Environnement, CEA CNRS UVSQ Orme des Merisiers, Gif-sur-Yvette, France; Department of Biology, University of Antwerp, Wilrijk, Belgium; CSIC, Global Ecology Unit CREAF-CEAB-UAB, Bellaterra, Catalonia, Spain; CREAF, Cerdanyola del vallès, Catalonia, Spain; Environmental Change Institute, Oxford, United Kingdom
推荐引用方式 GB/T 7714	Folberth C.,Khabarov N.,Balkovič J.,et al. The global cropland-sparing potential of high-yield farming[J],2020,3(4).
APA	Folberth C..,Khabarov N..,Balkovič J..,Skalský R..,Visconti P..,...&Obersteiner M..(2020).The global cropland-sparing potential of high-yield farming.Nature Sustainability,3(4).
MLA	Folberth C.,et al."The global cropland-sparing potential of high-yield farming".Nature Sustainability 3.4(2020).